per mole of magnesium??
Mg+2HCL --> MgCl2 +H2
2007-01-17 14:58:06 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
one thing is common that the moles of hydrogen atoms on both side of reactants and products is 2 moles.
on reactants the hydrogen exist as atoms
while in products it exists as molecules(1 mol)
2007-01-18 00:38:24 · answer #1 · answered by pankaj 2 · 0⤊ 1⤋
No your right it is more complicated. Do you want to know the number of moles of hydrogen per mole of magnesium before or after the chemical change?
in the reactants theres 1 mole of Mg for 2 moles of H. in the products theres 1 mole of Mg per 1 mole of H.
Don't get moles and atoms mixed up.
2007-01-17 23:09:59 · answer #2 · answered by Katrina 3 · 1⤊ 0⤋
You can see from the chemical reaction,
Mg + 2HCl --> MgCl2 + H2,
that for every 1 mole of Magnesium metal which is reacted, 2 moles of Hydrochloric acid are consumed and 1 mole of Magnesium Chloride and 1 mole of Hydrogen gas is produced.
So for every 1 mole of Magnesium consumed, 1 mole of Hydrogen gas is produced.
1 mole of Hydrogen gas produced per mole of Magnesium metal consumed.
2007-01-17 23:11:04 · answer #3 · answered by mrjeffy321 7 · 1⤊ 1⤋
2.. it isn't so hard. you're probably making it too hard. the above equation is already balanced... so see that there is one Mg int he formula on each side.... so therefore how many hydrogen atoms are there?
2007-01-17 23:04:19 · answer #4 · answered by Anonymous · 0⤊ 2⤋